1. Division of Thyroid and Parathyroid Endocrine Surgery; Department of Otolaryngology, Massachusetts Eye and Ear Infirmary, Massachusetts General Hospital, Harvard Medical School; Boston Massachusetts U.S.A
2. Department of Otology and Laryngology, Massachusetts General Hospital, Harvard Medical School; Boston Massachusetts U.S.A
3. Division of Surgical Oncology Endocrine Surgical Service; Massachusetts General Hospital, Harvard Medical School; Boston Massachusetts U.S.A